lib/pdf/CharOutputDev.h

   1 #ifndef __charoutputdev_h__
   2 #define __charoutputdev_h__
   3
   4 #include "../gfxdevice.h"
   5 #include "../gfxsource.h"
   6 #include "../gfxtools.h"
   7 #include "../kdtree.h"
   8
   9 #include "InfoOutputDev.h"
  10 #include "PDFDoc.h"
  11 #include "GlobalParams.h"
  12 #include "CommonOutputDev.h"
  13
  14 extern void addGlobalFont(const char*filename);
  15 extern void addGlobalLanguageDir(const char*dir);
  16 extern void addGlobalFontDir(const char*dirname);
  17
  18 class GFXLink;
  19
  20 class CharOutputDev:  public CommonOutputDev {
  21 public:
  22   gfxdevice_t* device;
  23
  24   CharOutputDev(InfoOutputDev*info, PDFDoc*doc, int*page2page, int num_pages, int x, int y, int x1, int y1, int x2, int y2);
  25   virtual ~CharOutputDev();
  26
  27   virtual void setDevice(gfxdevice_t*dev);
  28   virtual void setParameter(const char*key, const char*value);
  29
  30   virtual void beginPage(GfxState *state, int pageNum);
  31   virtual void endPage();
  32
  33   virtual GBool upsideDown();
  34   virtual GBool useDrawChar();
  35
  36   virtual void processLink(Link *link, Catalog *catalog);
  37   virtual void saveState(GfxState *state) ;
  38   virtual void restoreState(GfxState *state) ;
  39
  40   //----- update graphics state
  41   virtual void updateFont(GfxState *state);
  42   virtual void updateTextMat(GfxState *state);
  43
  44   //----- text drawing
  45   virtual void beginString(GfxState *state, GString *s) ;
  46   virtual void endString(GfxState *state) ;
  47   virtual void endTextObject(GfxState *state);
  48   virtual void drawChar(GfxState *state, double x, double y,
  49                         double dx, double dy,
  50                         double originX, double originY,
  51                         CharCode code, int nBytes, Unicode *u, int uLen);
  52
  53   //----- type 3 chars
  54   virtual GBool beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen);
  55   virtual void endType3Char(GfxState *state);
  56
  57   virtual void type3D0(GfxState *state, double wx, double wy);
  58   virtual void type3D1(GfxState *state, double wx, double wy, double llx, double lly, double urx, double ury);
  59
  60   virtual GBool needNonText();
  61
  62   private:
  63
  64   int currentpage;
  65   int type3active; // are we between beginType3()/endType3()?
  66
  67   gfxline_t* current_text_stroke;
  68   gfxline_t* current_text_clip;
  69
  70   // state variables for space char detection
  71   int last_char;
  72   double last_char_x;
  73   double last_char_y;
  74   double last_char_x_fontsize;
  75   double last_char_y_fontsize;
  76   double last_char_advance;
  77   double last_average_advance;
  78   double last_ascent;
  79   double last_descent;
  80   char last_char_was_space;
  81
  82   GFXLink*last_link;
  83   GFXLink*previous_link;
  84   kdtree_t*links;
  85
  86   /* config */
  87   int config_use_fontconfig;
  88   int config_remapunicode;
  89   int config_extrafontdata;
  90   int config_bigchar;
  91   int config_detectspaces;
  92   int config_space_between_lines;
  93   double config_fontquality;
  94   char* config_linkdatafile;
  95 };
  96
  97 class GFXLink {
  98     double x1,y1,x2,y2;
  99     int size;
 100     int buf_size;
 101     char*text;
 102   public:
 103     const char*action;
 104     GFXLink*last;
 105     void draw(CharOutputDev*out, gfxdevice_t*dev);
 106     void addchar(int unicode);
 107     GFXLink(GFXLink*last, const char*action, double x1, double y1, double x2, double y2);
 108     ~GFXLink();
 109 };
 110
 111 class GFXGlobalParams:  public GlobalParams {
 112     public:
 113     GFXGlobalParams();
 114     ~GFXGlobalParams();
 115     virtual DisplayFontParam *getDisplayFont(GString *fontName);
 116 };
 117
 118 #endif //__charoutputdev_h__